Based on the structural characteristics of the opening and closing of the dam in the reinforcement of the dam，this paper puts forward the design concept of the reconstruction of the crest and the water landscape，and studies and applies the heightening of the whole structure of the building and the original opening and closing room technology，which effectively solve the problem that the bearing capacity of the old engine room is not enough after the construction of the building is high.It has a good reference effect by promoting the construction of the landscape architecture of the dam.Through the application of good practical engineering effect，to provides a good reference for promoting the cultural development of dam landscape.